Shutter-worker.



'No. 663,858. Patented Dec. l8, I900.

A. m. BURNHA M. SHUTTER WORKER.

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ARTHUR M. BURNHAM, OF GARDINER, MAINE, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO GEORGE C. MORRELL, OF BOSTON, MASSACHUSETTS.

SHUTTER-WORKER.

SPECIFICATION forming part of Letters Patent N 0. 663,858, dated December 18, 1900;

Application filed June 18, 1900. Serial No. 20,720, (No model.)

' tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in shutter-Workers, the object of the invention being to provide a shutter with improved mechanism for operating it and ornamental mechanism on the inside of the house connected with said first-mentioned mechanism.

With this object in view the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fullyhereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a View in cross-section, illustrating my improvements. Fig. 2 is a view in vertical section, and Figs. 3, 4, and 5 are detail views. Figs. 6 and 7 are views of modified forms of my invention.

A represents the outside window-cap and B the inside window-cap, O the window-casing, and D D the sashes. The shutterE is hinged to the Windowcasing by means of hinges F.

A tight box or casing 1 (made, preferably, of metal in two parts secured together) is screwed into the window-frame, as will more fully hereinafter appear, and is adapted for the reception of a Worm-wheel 2. The journals 3 4 of the worm-wheel are preferably made integral with said worm-wheel and the box or casing is made with bearings for said journals, the journal 4 being made of a length to project beyond its bearing, Where it is made angular for the reception of an arm 7. The arm 7 is secured to the journal or spindle by means of a key 8, and a Washer is interposed between said key and the box 1, or, if desired, the free end of the journal 4 may be screw-threaded for the reception of a nut whereby to prevent the escape of the arm 7.

In order to prevent the entrance of dust, &c., to the outer journal-bearing, the boss 9 at the end of arm 7 is kept in close contact with the box or casing where the journal 4 passes through it by means of a spring 10, disposed Within the box or casing 1 and bearing at its respective ends against one face of the worm-wheel and the inner face of box or casing. The free end of arm 7 is provided with a perforated boss 11 for the accommodation of a screw or pin 12, which passes downwardly through it and serves to pivotally connect it to a link 12*, pivotally attached to the upper end of the shutter E at a point preferably somewhat beyond the vertical axis thereof. It will be observed that the hinges cooperate with the arm 7 to prevent an y upward movement of the shutter, and thus prevent therlatter from being lifted or in any manner displaced by high winds or from other causes. The casing 1 is also made with a compartment 1%, in which suitable bearings are made for the reception of the journals of a worm 18, arranged to mesh with the worm-wheel 2, and the casingat one end of the compartment 14 is elongated, as shown at 15, and provided with external screw-threads to permit the same to be screwed into the window-frame to secure it in place, or, if desired, a screwthreaded sleeve 16 may be secured on the easing bya set-screw 16, as shown in Fig. 7. A spindle 17 passes through the window-frame, through the elongated portion 15, and is made angular at its outer end to fit snugly into an angular hole in the worm 18, so as to rotate the same when the spindle is operated. The inner end of the spindle 17 is mounted in a bearing 19 in a casing 20, open at its front and bottom, as shown. A strip 21 is disposed across the front of the casing at its lower end and is secured to the sides of said casing, and rollers 22 are revolubly mounted between said strip and casing and spaced apart. A sprocket-wheel 23 is secured on the end of the spindle 17 in the casing, and a sprocketchain 2 1 is passed over said sprocket-Wheel 23 and is provided at its ends with suitable handholds 24:. One side of the chain 24 is disposed between said rollers 22 and the other side of the chain around the outside of one roller to prevent rattling of the chain and at the same time hold the chain on the sprocketwheel 23.

It will be seen that the chain 24 is disposed in easy reach of the operator, who can by simply pulling down on the different ends of the chain operate the shutter.

A cap or cover 25 is disposed around the casing 20 and is secured thereto in any approved manner and ornamented to give to the cover an attractive appearance.

The link 12 may, if desired, be dispensed with and the arm 7 provided in its free end with a longithdinal slot at for the reception of a pin 1) on the top of the shutter, as shown in Fig. 6.

Various other slight changes might be resorted to without departing from my invention, and hence I do not wish to be limited to the precise details shown and described, but consider myself at liberty to make such slight changes and alterations as fairly fall Within the spirit and scope of my invention.

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is

1. In a shutter-Worker, the combination of a tight casing,a Worm-Wheel completely in closed within said casing and having a journal projecting beyond the same, means for connecting said journal with a shutter, a tubular, ex-

- mounted, a chain passing over said sprocket-V wheel, rollers in said casing against which the chain bears in such manner as to hold it in mesh with the sprocket-Wheel and prevent rattling of said chain, and a cover for said casing.

In testimony whereof I have signed this specification in the presence of two subscribing Witnesses.

ARTHUR M. BURNHAM.

Witnesses:

FRANK G. PARKER, LoUIs A. JONES. 

